BlockAlto, Arizona
23 topographic sheets cover this place, the earliest surveyed in 1904 and the latest in 1996. It stands in the Nogales census division. It lies in ZIP code area 85648. It lies near El Plomo. The Survey maps it on the San Cayetano Mountains quadrangle.
Topographic sheets covering this place
10 surveys from 23 printed sheetsMatched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.
- 1904 USGS Patagonia quadrangle1:125000
- 1905 USGS Patagonia quadrangle1:125000, 4 printings
- 1922 USGS Agus Caliente quadrangle1:62500
- 1956 USGS Nogales quadrangle1:250000, 4 printings
- 1958 USGS Mount Wrightson quadrangle1:62500, 4 printings
- 1958 USGS Nogales quadrangle1:250000
- 1959 USGS Nogales quadrangle1:250000
- 1981 USGS San Cayetano Mts. quadrangle1:24000, 3 printings
- 1994 USGS Fort Huachuca quadrangle1:100000, 3 printings
- 1996 USGS San Cayetano Mountains quadrangle1:24000
Fires near this place
19 since 1993Regional context, not property-specific evidence. The federal wildfire occurrence database lists 19 fires within 5 miles of Alto between 1993 and 2018, burning about 3,117 acres in total. 9 started naturally. 2 were recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.
| Reported cause | Fires |
|---|---|
| Natural | 9 |
| Missing data/not specified/undetermined | 4 |
| Recreation and ceremony | 3 |
| Arson/incendiarism | 2 |
| Smoking | 1 |
The most recent of them, most recent first, with the day each was reported and the service that recorded it.
| Date | Cause | Size | Reported by | Name on the report |
|---|---|---|---|---|
| 3 August 2018 | Natural | 186 acres | Coronado National Forest | JOSEPHINE |
| 3 August 1993 | Natural | under an acre | Coronado National Forest | WILDER |
| 25 August 2015 | Missing data/not specified/undetermined | under an acre | Arizona Department of Forestry and Fire Management - State Office | GROSVENOR |
| 10 August 2015 | Missing data/not specified/undetermined | under an acre | Coronado National Forest | SALERO |
| 28 July 2000 | Natural | 5.0 acres | Arizona Department of Forestry and Fire Management - State Office | GROVSNER |
| 22 July 2000 | Natural | under an acre | Coronado National Forest | ELEPHANT HEAD #1 |
| 22 July 2000 | Natural | 1.0 acres | Coronado National Forest | ELEPHANT HEAD 2 |
| 13 July 2013 | Natural | 29 acres | Arizona Department of Forestry and Fire Management - State Office | SOUTH |
Settlements close enough to share some of these fires:
Mines and quarries near this place
10 of 85 shownRegional context, not property-specific evidence. The federal mineral resources record lists 85 workings within 5 miles of Alto: 61 past producers, 11 occurrences, 6 producers, 5 prospects. 6 still produce. What was taken out: Lead, Silver, Copper, Gold, Zinc, Copper, Silver, Gold. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Alto Mine Group | Lead, Silver, Copper, Gold, Stone, Zinc | Past Producer | ||
| Alto Vein Swarm | Lead, Silver, Copper, Zinc, Gold, Molybdenum, Antimony, Barium-Barite, Uranium | Past Producer | 1687, 1959 | |
| Blue Jay Prospect | Iron, Aluminum, Uranium | Occurrence | ||
| Bowling Green Mine | Lead, Silver, Copper, Gold, Uranium | Past Producer | ||
| Cracker Jack Group | Copper, Lead, Silver, Uranium | Producer | ||
| Dixie | Barium-Barite | Occurrence | Vein | |
| Dixie Mine | Lead, Silver, Emery, Copper, Zinc | Past Producer | 1911 | |
| Emma | Lead, Silver, Copper, Manganese | Producer | ||
| Four Queens | Uranium, Vanadium | Prospect | ||
| Group Likely Included Leroy And | Copper, Zinc, Gold, Lead, Silver | Past Producer |
Nearest settlements
The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.
| Map | Place | Distance | Sheets |
|---|---|---|---|
| Patagonia | 7.9 miles | 22 | |
| Madera Canyon | 8.3 miles | 23 | |
| Sotos Crossing (historical) | 8.6 miles | 19 | |
| Otero | 8.9 miles | 20 | |
| Tubac | 8.9 miles | 20 | |
| Carmen | 9.3 miles | 20 | |
| Tumacacori | 9.6 miles | 20 | |
| Rio Rico | 10.6 miles | 20 |
Provenance
This settlement is recorded in the Geographic Names Information System as feature 25608. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.